Succession - CST Personal Home Pages
... STUMP: Without direct sunlight to dry them, stumps in this plot remain damp through most of the year. The moisture Site 2/ view1 hastens their decay. Mosses, among the most primitive plants, thrive on the rotting wood. So do fungi such as mushrooms, which spread by spores borne on the wind or via t ...
... STUMP: Without direct sunlight to dry them, stumps in this plot remain damp through most of the year. The moisture Site 2/ view1 hastens their decay. Mosses, among the most primitive plants, thrive on the rotting wood. So do fungi such as mushrooms, which spread by spores borne on the wind or via t ...
Positive interactions among alpine plants increase with stress
... d.f. ¼ 1, 93, P , 0.001. For the nine locations where plants were harvested, RNEbiomass was 20.22 ^ 0.02 (1 s.e.) at the low sites and þ0.25 ^ 0.02 at the high sites. For the nine locations where leaf growth rates were measured RNEleaf growth was 0.33 ^ 0.02 (1 s.e.) at the low sites and þ0.16 ^ 0.0 ...
... d.f. ¼ 1, 93, P , 0.001. For the nine locations where plants were harvested, RNEbiomass was 20.22 ^ 0.02 (1 s.e.) at the low sites and þ0.25 ^ 0.02 at the high sites. For the nine locations where leaf growth rates were measured RNEleaf growth was 0.33 ^ 0.02 (1 s.e.) at the low sites and þ0.16 ^ 0.0 ...
Basins of attraction for species extinction and coexistence in spatial
... normalized so that the occurrence probabilities of motion, reproduction, and prey are s / 共s + c + u兲, c / 共s + c + u兲, and u / 共s + c + u兲, respectively. According to the theory of random walks 关18兴, individual mobility M is defined as M = s共2N兲−1, to which the number of sites explored by one mobil ...
... normalized so that the occurrence probabilities of motion, reproduction, and prey are s / 共s + c + u兲, c / 共s + c + u兲, and u / 共s + c + u兲, respectively. According to the theory of random walks 关18兴, individual mobility M is defined as M = s共2N兲−1, to which the number of sites explored by one mobil ...
File - Cook Biology
... 2. Explain how ecologists may estimate the density of a species. 3. Explain how limited resources and trade-offs may affect life histories. 4. Compare the exponential and logistic models of population growth. 5. Explain how density-dependent and density-independent factors may affect population grow ...
... 2. Explain how ecologists may estimate the density of a species. 3. Explain how limited resources and trade-offs may affect life histories. 4. Compare the exponential and logistic models of population growth. 5. Explain how density-dependent and density-independent factors may affect population grow ...
Population Ecology - RHS-APES
... 2. This exponential growth is converted to logistic growth when the populations gets larger and face environmental resistance. In logistic growth, the growth rate levels off as population size reaches or nears carrying capacity. 3. The sigmoid (s-shaped) population growth curve shows that the popula ...
... 2. This exponential growth is converted to logistic growth when the populations gets larger and face environmental resistance. In logistic growth, the growth rate levels off as population size reaches or nears carrying capacity. 3. The sigmoid (s-shaped) population growth curve shows that the popula ...
Herbivory and predation
... after herbivory to compensate for lost tissue “Overcompensation” much discussed: this means plants are stimulated to grow MORE after grazing/browsing. Is overcompensation possible? Is compensation over extended periods possible? ...
... after herbivory to compensate for lost tissue “Overcompensation” much discussed: this means plants are stimulated to grow MORE after grazing/browsing. Is overcompensation possible? Is compensation over extended periods possible? ...
ES 120 TOXICS IN THE ENVIRONMENT
... 1. There are multiple stressors, some density dependent and some density independent 2. Intensity of stressors varies in time 3. Population growth may be discrete 4. Real populations are age/size structured: birth and death rates depend on age/size 5. Dynamics of real populations depend on other spe ...
... 1. There are multiple stressors, some density dependent and some density independent 2. Intensity of stressors varies in time 3. Population growth may be discrete 4. Real populations are age/size structured: birth and death rates depend on age/size 5. Dynamics of real populations depend on other spe ...
Population Ecology
... • This requires us to count number born and number that die in specific period of time • Easier to use rates ...
... • This requires us to count number born and number that die in specific period of time • Easier to use rates ...
community - lynchscience
... interactions in which a species evolves to imitate the appearance of something unappealing to its would-be predator. ...
... interactions in which a species evolves to imitate the appearance of something unappealing to its would-be predator. ...
Section 2 How Species Interact with Each Other
... population interacts with another. The five major types of species interactions, summarized in Figure 10, are competition, predation, parasitism, mutualism, and commensalism. These categories are based on whether each species causes benefit or harm to the other species in a given relationship. Keep ...
... population interacts with another. The five major types of species interactions, summarized in Figure 10, are competition, predation, parasitism, mutualism, and commensalism. These categories are based on whether each species causes benefit or harm to the other species in a given relationship. Keep ...
Ecological Management factors associated with Wind Farms
... increasing) do not get very characteristic or repeatable results b. or at equilibrium (where the numbers of individuals of species coming in are the same as numbers leaving) get associated species assemblage. c. Appropriate immersion time will vary under different environmental conditions, making co ...
... increasing) do not get very characteristic or repeatable results b. or at equilibrium (where the numbers of individuals of species coming in are the same as numbers leaving) get associated species assemblage. c. Appropriate immersion time will vary under different environmental conditions, making co ...
2.1 Organisms and Their Relationships
... Ecology is the scientific discipline in which the relationships among living organisms and the interaction the organisms have with their environments are suited. Ecologists observe, experiment, and model using a variety of tools and methods. ...
... Ecology is the scientific discipline in which the relationships among living organisms and the interaction the organisms have with their environments are suited. Ecologists observe, experiment, and model using a variety of tools and methods. ...
Principles of Ecology (APES)
... mutation adds variety to the inherited characteristics In some cases, individuals that survive with mutations are so different from their parents that they cannot reproduce with the normal offspring This causes speciation Mutations can result in a new species whether or not that species is bet ...
... mutation adds variety to the inherited characteristics In some cases, individuals that survive with mutations are so different from their parents that they cannot reproduce with the normal offspring This causes speciation Mutations can result in a new species whether or not that species is bet ...
The graph below shows how a population changes over time. Based
... (B) The death rate decreased faster than the birth rate, which caused the population to increase in size, but then the death rate exceeded the birth rate, which caused the population growth rate to stabilize at a slower rate. Distractor Rationale: This answer suggests the student understands that a ...
... (B) The death rate decreased faster than the birth rate, which caused the population to increase in size, but then the death rate exceeded the birth rate, which caused the population growth rate to stabilize at a slower rate. Distractor Rationale: This answer suggests the student understands that a ...
Chapter 8 Population Ecology Definitions and concepts
... • Biotic potential: populations capacity for growth • Intrinsic rate of increase or growth (r): rate at which a population would grow if it had unlimited resources. (per capita rate of increase, maximum capacity to reproduce) Characteristics of species with high r • reproduce early in life • short g ...
... • Biotic potential: populations capacity for growth • Intrinsic rate of increase or growth (r): rate at which a population would grow if it had unlimited resources. (per capita rate of increase, maximum capacity to reproduce) Characteristics of species with high r • reproduce early in life • short g ...
The Keystone Predator Hypothesis - Cal State LA
... • Because population growth potential is geometric and world is finite, there is a struggle for existence. • Darwin reasoned that struggle should be most intense among most similar organisms - hence competition should predominate. • The competitive exclusion principal maintains that no two species c ...
... • Because population growth potential is geometric and world is finite, there is a struggle for existence. • Darwin reasoned that struggle should be most intense among most similar organisms - hence competition should predominate. • The competitive exclusion principal maintains that no two species c ...
APES semester 1 review
... ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ _____________________ ...
... ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ _____________________ ...
02Johnson
... • Darwin expanded Malthus’ view to include every organism all organisms have the capacity to over-reproduce only a limited number of these offspring survive and produce the next generation ...
... • Darwin expanded Malthus’ view to include every organism all organisms have the capacity to over-reproduce only a limited number of these offspring survive and produce the next generation ...